Geography, 16.12.2021 23:50 sidneydominguez2323
Evidence suggests that originally the Earth's atmosphere contained a large amount of carbon dioxide and almost no oxygen. Our atmosphere is different today: it contains a large amount of oxygen, which is good, since we need it to breathe. What caused this atmospheric change? A) Global warming B) A meteor impact C) Photosynthetic organisms like cyanobacteria taking in carbon dioxide and releasing oxygen. D) Photosynthetic organisms like cyanobacteria taking in oxygen and releasing carbon dioxide.
Answers: 2
Geography, 23.06.2019 02:30
What did the pattern of earthquakes in the wadati-benioff seafloor zones show scientists? a.) earthquakes occur where the ocean floor reaches its highest temperatures. b.) many earthquakes take place 700 kilometers below the seafloor. c.) slabs of ocean floor return to the mantle in subduction zones. d.) ocean - trenches cause earthquakes.
Answers: 1
Geography, 24.06.2019 02:30
Choose the false statement. a. some organisms fossilize when frozen or dried out. b. bacteria can destroy dead plants and animals. c. it is common for a plant or animal to fossilize when it dies. d. rapid burial under small-sized sediment increases the chance for fossilization to occur.
Answers: 1
Geography, 24.06.2019 06:30
How did mercantilist policies european countries build wealth and power
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Evidence suggests that originally the Earth's atmosphere contained a large amount of carbon dioxide...
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